What are the APN settings for T-Mobile?

All carrier networks have APN (Access Point Name) settings, which distinguish their gateway between the internet and the cellular netowrk. If the APN settings on your phone aren't just right, then you may not be able to send or receive multimedia messages (MMS), connect to the internet, or use other key T-Mobile features, like Voice over LTE (VoLTE) or Wi-Fi Calling.

What is an APN?

APN stands for Access Point Name, which is kind of like a password at a speakeasy – no APN, no entry to the internet.

When you enter the APN into your phone, the carrier takes a look at the information and decides what type of connection should be made, such as the IP address assigned to your phone, which security methods should be used, and if it should be connected to a private customer network.